Can you check if someone bought the game somehow? Then maybe gifting it on steam? I only read your comment half and then again to somewhat understand it, but I'm asking because I'm taking a look right now and in germany it's only blocked on steam.
I mean german users can't buy adult games there anymore and they don't really allow us to prove our age, now they made another change that removed every game without an USK, the last time I had help with completing a game I already bought when I was still allowed, gifting worked.